knownports / Port ranges / 800–1023
System PortsPorts 800–1023
IANA lists at least one assignment on 44 of the 224 numbers from 800 to 1023, 19.6%, the lowest share among the 9 System Port ranges on this site. The longest stretch with no assignment on any protocol runs from 916 to 952 (37 numbers). 3 numbers here are assigned on TCP alone and 2 on UDP alone. Of the 7 dated assignments, the earliest recorded date is June 10, 2014 (mbap-s on 802); the latest is February 17, 2023, for rift-ties on 915. Only 1021 and 1022 have an SCTP entry as well.
Ports with their own page: 861 owamp-control 862 twamp-control 993 imaps
Every assigned number from 800 to 1023
800–899 · 18 numbers assigned
| Port | Service | Protocols | Label | Registered |
|---|---|---|---|---|
| 800 | mdbs-daemonmdbs_daemon | TCPUDP | — | — |
| 801 | device | TCPUDP | — | — |
| 802 | mbap-s | TCPUDP | Modbus Application Protocol Secure | Jun 10, 2014 |
| 810 | fcp-udp | TCPUDP | FCP | — |
| 811–827: no assignment, 17 numbers | ||||
| 828 | itm-mcell-s | TCPUDP | itm-mcell-s | — |
| 829 | pkix-3-ca-ra | TCPUDP | PKIX-3 CA/RA | — |
| 830 | netconf-ssh | TCPUDP | NETCONF over SSH | — |
| 831–846: no assignment, 16 numbers | ||||
| 847 | dhcp-failover2 | TCPUDP | dhcp-failover 2 | — |
| 848 | gdoi | TCPUDP | GDOI | — |
| 853 | domain-s | TCPUDP | DNS query-response protocol run over TLS | Oct 8, 2015 |
| 854 | dlep | TCPUDP | Dynamic Link Exchange Protocol (DLEP) | Apr 3, 2017 |
| 860 | iscsi | TCPUDP | iSCSI | — |
| 861 | owamp-controlowamp-test | TCPUDP | OWAMP-Control OWAMP-Test | — |
| 862 | twamp-controltwamp-test | TCPUDP | TWAMP-Control TWAMP-Test Receiver Port | — |
| 863–872: no assignment, 10 numbers | ||||
| 873 | rsync | TCPUDP | rsync | — |
| 874–885: no assignment, 12 numbers | ||||
| 886 | iclcnet-locate | TCPUDP | ICL coNETion locate server | — |
| 887 | iclcnet-svinfoiclcnet_svinfo | TCPUDP | ICL coNETion server info ICL coNETion server info | — |
| 888 | accessbuildercddbp | TCPUDP | AccessBuilder CD Database Protocol | — |
| 889–899: no assignment, 11 numbers | ||||
900–999 · 21 numbers assigned
| Port | Service | Protocols | Label | Registered |
|---|---|---|---|---|
| 900 | omginitialrefs | TCPUDP | OMG Initial Refs | — |
| 901 | smpnameres | TCPUDP | SMPNAMERES | — |
| 902 | ideafarm-door | TCPUDP | self documenting Telnet Door | — |
| 903 | ideafarm-panic | TCPUDP | self documenting Telnet Panic Door | — |
| 910 | kink | TCPUDP | Kerberized Internet Negotiation of Keys (KINK) | — |
| 911 | xact-backup | TCPUDP | xact-backup | — |
| 912 | apex-mesh | TCPUDP | APEX relay-relay service | — |
| 913 | apex-edge | TCPUDP | APEX endpoint-relay service | — |
| 914 | rift-lies | UDP | Routing in Fat Trees Link Information Element | Feb 17, 2023 |
| 915 | rift-ties | UDP | Routing in Fat Trees Topology Information Element | Feb 17, 2023 |
| 916–952: no assignment, 37 numbers | ||||
| 953 | rndc | TCP | BIND9 remote name daemon controller | Jun 8, 2017 |
| 954–988: no assignment, 35 numbers | ||||
| 989 | ftps-data | TCPUDP | ftp protocol, data, over TLS/SSL | — |
| 990 | ftps | TCPUDP | ftp protocol, control, over TLS/SSL | — |
| 991 | nas | TCPUDP | Netnews Administration System | — |
| 992 | telnets | TCPUDP | telnet protocol over TLS/SSL | — |
| 993 | imaps | TCP | IMAP over TLS protocol | — |
| 995 | pop3s | TCPUDP | POP3 over TLS protocol | — |
| 996 | vsinet | TCPUDP | vsinet | — |
| 997 | maitrd | TCPUDP | — | — |
| 998 | busboypuparp | TCPUDP | — | — |
| 999 | puprouterapplixgarcon | TCPUDP | — Applix ac — | — |
1000–1023 · 5 numbers assigned
| Port | Service | Protocols | Label | Registered |
|---|---|---|---|---|
| 1000 | cadlock2 | TCPUDP | — | — |
| 1001 | webpush | TCP | HTTP Web Push | Nov 1, 2016 |
| 1008 | other registry note | |||
| 1010 | surf | TCPUDP | surf | — |
| 1011–1020: no assignment, 10 numbers | ||||
| 1021 | exp1 | TCPUDPSCTPDCCP | RFC3692-style Experiment 1 | — |
| 1022 | exp2 | TCPUDPSCTPDCCP | RFC3692-style Experiment 2 | — |